/Engine/Source/Runtime/ApplicationCore/Public/GenericPlatform/Accessibility/GenericAccessibleInterfaces.h
Returns the first instance of a child from a source widget that satisfies a search criteria. If the passed in source widget does not have any children or if there are no children that satisfy the search criteria, nullptr is returned. The search criteria can be either a functor or lambda that acts as a predicate. It must return a bool and take in a constTSharedRef& as an argument.
The first child from the source widget that satisfies the search criteria.
template<typename PredicateType> static [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [IAccessibleWidget](API\Runtime\ApplicationCore\GenericPlatform\Accessibility\IAccessibleWidget) > SearchForFirstChildFrom ( const [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< [IAccessibleWidget](API\Runtime\ApplicationCore\GenericPlatform\Accessibility\IAccessibleWidget) > & Source, PredicateType Predicate )